The growing to be incidence of heterogeneous fabrics equivalent to composites or covered substrates in structural elements makes it worthwhile for designers and scientists to accommodate the categorical positive factors of the mechanical habit of stable interfaces.
This e-book introduces easy options on mechanical difficulties with regards to the presence of solid/solid interfaces and their functional purposes. some of the subject matters mentioned listed here are the mechanical characterization of interfaces, the initiation and development of cracks alongside interfaces, the starting place and keep watch over of interface adhesion, focusing particularly on skinny movies on substrate structures. it really is designed and established to supply a fantastic historical past within the mechanics of heterogeneous fabrics to assist scholars in fabrics technological know-how, in addition to scientists and engineers.
Chapter 1 Interfaces: The Physics, Chemistry and Mechanics of Heterogeneous Continua (pages 1–26): Michel Dupeux and Muriel Braccini
Chapter 2 constitution and Defects of Crystalline Interfaces (pages 27–64): Louisette Priester
Chapter three Singularities and Interfacial Cracks (pages 65–100): Dominique Leguillon
Chapter four Interface Adherence (pages 101–133): Muriel Braccini
Chapter five Controlling Adherence (pages 135–187): Thomas Pardoen, Olivier Dezellus and Muriel Braccini
Chapter 6 Crack–Interface interplay (pages 189–210): Eric Martin
Chapter 7 surprise Mechanics and Interfaces (pages 211–248): Michel Arrigoni, Michel Boustie, Cyril Bolis, Sophie Barradas, Laurent Berthe and Michel Jeandin
Chapter eight Coating–Substrate Interfaces (pages 249–271): Michel Dupeux
Chapter nine harm in skinny movies on Substrates (pages 273–294): Michel Dupeux, Muriel Braccini and Guillaume Parry
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Extra info for Mechanics of Solid Interfaces
42 Mechanics of Solid Interfaces The 02-points provide areas of compatibility between the two translation networks: that of the real bicrystal and that of the coincident bicrystal. Between these points there are areas of incompatibility where secondary intrinsic dislocations are located. Like the primary ones, secondary dislocations form periodic networks and therefore have no long-distance elastic fields. 12] Secondary dislocations are defects that break the periodicity of the primary dislocations.
1) and has no physical meaning when the density of dislocations is elevated. 2. 5] Structure and Defects of Crystalline Interfaces 37 where b is the Burgers vector of the dislocations and d is their distance. This wall is the basis of the first model by Read and Shockley [REA 50] of a low-angle tilt grain boundary. 6] where A = ln b / r0 and γ0 = μ b / 4 π (1 – ν). The energy of a low-angle boundary is generally less than 400 mJ/m-2. 6. Read and Shockley model for low-angle tilt grain boundaries.
2. Relaxation processes in the interface At high temperatures, the stresses associated with lattice dislocations can relax within the interface itself. The processes implemented are similar whenever relaxation occurs – from the entry of the dislocation during a deformation in hot conditions or during a thermal treatment subsequent to a deformation in cold conditions. Relaxation processes and their dependence on temperature and time are briefly presented below. For more details, the reader is referred to [PRI 98, PRI 01, PRI 06].